Ore-concentrating table.



No. 673,489. Patented May 7, I901. V. B. WILLITS, Decd.

M. P. WILLITS, Execuirix. ORE CONCENTRATING TABLE.

2 Sheets-Sheet I.

(Application filed June 19, 1900.)

(N0 M del) WITNESSES ATTORNEY.

Patented May 7, IBM.

V. B. WILLITS, Decd.

7 II. F. WILLITS, Executrix. ORE CONGENTRATING TABLE. (Application filed June 19, 1900.) (No Model.) gSheets-Shaet 2.

WWW MW E liywmgg, I WITNESSES- mmmmu f ATTOR Y.

UNIT D STATES PATENT OFFIcE.

MARTHA P. WILLITS, OF NEDERLAND, COLORADO, EXECUTRIX OF VAN BURTON WILLITS, DECEASED.

ORE-CONCENTRATING TABLE.

SPECIFICATION forming part of Letters Patent N 0. 673,489, dated May 7, 1901.

Application filed June 19, 1900. Serial No. 20,909. (No model.)

To all whom it may concern.-

Beit known that VAN BURTON WILLITS,deceased, late a citizen of the United States, residing at Nederland, in the county'of Boulder and State of Colorado, did invent a new and useful Ore-Concentrating Table, of which the following is a specification.

The object of this invention is to provide a new and improved form of ore-concentrating table which is simple and durable in con-. struction, very effective in operation, and which separates the ore from the tailings much more efficiently than other tables now known and used for that purpose.

The invention consists of certain parts and details and combinations of the same, as will be hereinafter fully described, and pointed out in the claims.

Reference is to be had to the accompanying drawings, forming a part of this specification, in which similar letters of reference indicate corresponding parts in all the figures.

Figure l is a plan View of the improvement with the parts broken out. Fig. 2 is a side elevation of the same. Fig. 3 is a transverse section of the same on the. line a; a: of Fig. 1. Fig. 4 is a detail sectional view showing the adjusting devices. Fig. 5 is a sectional view of a modification of the device shown in Fig. 3.

The improved concentratiug-table'is mount ed on a suitably-constructed frame A, carrying upwardly-extending arms B, which sup-. port the jigger frame or frames 0 and the jigging frame or frames 0. Upon the top of the jigging-frame C are journaled a number of rollers D, upon which passes an endless carrier-belt E, which also passes over drums F and F, journaled near the ends of main frame A. The drum F receives by means of the main drive-pulley G and the worm-gear H a rotary motion which carries the carrierbelt E around the drums F and F, passing over the rollers D.

The frame 0 may be inclined laterally to any desired degree by means of the adjusting hand-screws I, operated to raise the frame 0 a greater or less distance above the main frame A, and it will also be evident that when the frames 0 and C are in multiple one or more of said frames may be elevated independently of the others, thus inclining that portion of the jigging-table C, the carrier'- belt E conforming to the pitch of that portion of the jigging-table over the rollers of which it is passing at a given time.

Mounted to turn in suitable bearings hung from the jigger-fraine O is a cam-shaft J, bearing two cams J for each jigging-frame 0, operating to raise and allow to drop the inner jigging-frame-C. By means of the drive-pulleys K and K a rotary motion is imparted to the main cam-shaft J and by it transferred through conical pulleys M and M to the camshaft J, revolving it at varying speeds, as may be desired.

Attached to the jigger-frame O is hung a casting N, the lip of which catches the jigging-frame 0 when itis released by the cam J. In the lip of this casting N there is an adjusting-screw O, by means of which the distance which the jigging-frame C can drop when released may be accurately adjusted from no movement at all to the full throw of the cams. In other tables operated by cams it is usual to allow the table to drop the full throw of the cams without means being provided for regulating the vertical drop, and consequently the amount of jigging motion imparted to the table.

The jigging-table is preferably composed of two supplemental frames-t'. 6., the jigger-frame O, which is adjustable with reference to the main frame A for the purpose of giving a lateral incline to the jigging-table and thejigging-frame O, to which is imparted the vertical reciprocating motion by the cams J or other suitable means, and resting at its lowest position upon the lip of the casting N. Jigging-frame-O is hinged at the lower side or edge to the main frame A or other suitable support by means of the hinge P or otherwise secured. By this construct-ion the extent of the reciprocating motion gradually diminishes as you go from the upper to the lower side or edge of the table.

The frames 0 and C and cam-shaft J and accompanying details may be constructed in multiple, in which event each portion may be independently adjusted relative to the others with reference to speed of operation, extent of jigging motion, and degree of incline laterally.

the stock, carrying the lighter particles of quartz, white sand, and other foreign matter transversely across the table to the wastetrough S, while the heavier ore particles settle and cling to the carrier-belt E and travel slowly with it in the direction of and over the drum F, and are collected in the concentrate-box T, which is tilled with water, and may, if desired, be equipped with brushes coming in contact with the belt E for the purpose of better freeing it from the concen-. The separation of the ore from the foreign matter is greatly aided by the agitation of the mass occasioned by the rapid reciprocatingmotion of the jig-1 ging-frame U, communicated to it in the preferred construction by the revolution of the? The rapidity of the jigging motion; is varied at will by means of the conical pul-i leys M and M, and the degree or amount of; agitation is regulated to a nicety by the ad-'; justing-screws 0 increasing or diminishing By using, under the: one endless belt E, multiple jigging-frames, each independently adjustable as to speed, degree of agitation, and relative lateral ind cline the operator is enabled to impart to the mass being concentrated such different kinds 1 trates which it carries.

cams J.

the amount of drop.

of treatment as may be advisable for different kinds of ore at the various stages of its progress over the concentrating-table. found in practice that the best results are obtained by subjecting the first portion of the jigging-table toa more rapid and violent agitation, as well as a greater degree of inclinelaterally, and causing the water to flow in greater volume and force over the surface of the mass; that the second portion may profitably receive a less degree of agitation, slower jigging motion, and smaller incline, allowing the water to flow more slowly in smaller volume and with less ebullition; whereas, in the laterstages, the ore having become more highlyconcentrated andcleaner, it is desirable to still further reduce the incline and speed and amount of agitation and diminish the flow of water in order that the valuables may not be washed into the wastetrough S. in one table of two or more tables of different manner of operation.

A further and important feature of this construction is-to be found in the fact that it is so constructed that the agitation is gradually reduced as the mass undergoing treatment approaches the lower side of the table. In other tables the agitation is practically equal in all portions of the same, and the values aretbeing constantly washed off the table into the waste-trough; whereas in this It is In this way the effect is obtained construction as the mass reaches a point nearer the lower side or edge of the table and close tothe waste-trough S there is practically no agitation of the table, and consequently a very even and gentle flow of the water over the particles thereon. By this particular feature it is adapted to be used not only upon stock direct from the mill, but, if desired, in connection with and as supplemental to other tables which do not so thor oughly concentrate the ore, in which latter case the stock for this table is taken from the tailings end of such coarse concentrator by arranging with a sizing-screen of about one hundred mesh the spout where the tailings run off. The fine slime that other concen= training-tables lose will go through this fine screen, whilethe coarser-quartz will jig off at the lower end and go into the waste. This fine slime-or stock is carried to the concentrator-table in atrough and deposited :in-the head-boXQ, from which it is deposited in a fine stream upon the upper edge of the head end of the table, where it spreads out .in a wide gentle stream. A constant supplyiof iwater from the pipes R B. R washes over this stock,carryin g the wastematter into thewastetrough at the lower side of the table, while the agitation, slight or greater in degree, as may be required, helps tobring the lighter worthless particles of sandorsilica to the top and in contact with the stream of water, tobe washed off, while the heavier valuable portions are caused to settle and adhere to the carrier-belt E. This agitation should only be enough to dapple the water in most cases, as otherwise it would agitate the minerals too much and cause them to wash off with the worthless portion. Hence the great advantage in having a concentrator in which the vertical reciprocating motion of the jiggingtable can be accurately acljusted,-as to speed and extent, at the will of the operator, both as a-whole and in portions, to meet the requirements of difierent-kinds of ore and various stages of concentration.

The table has been found'particularly efficient; either-as applied primarily to the stock or as supplemental to other tables, in certain mining regions where the stock as it comes from the mill is ofa greasy slimy nature and very diflicult toconcentratepwing tothe tendency of the valuables to float off with the gangue. It is in certain localities a'well-recognized fact that a very large proportion of the values .are lost on this account, and the table, owing to its adjustability and the diminishingagitation as the stock approaches the waste-trough, has been .proved to be ,peculiarly fitted to savean exceedingly high proportion of the values frm stock of this kind.

By making the concentrator with multiple frames there can be secured in one table various degrees of vertical agitation, various speeds of operation, various degrees of in- IIO cline, and rapidity of flow and volume of water, whereas in mostother tables the ore is subjected to the same kind of treatment in its last stages of concentration and near the foot of the table that it is when it is first deposited in its coarse condition at the head of the table. This feature is considered to be very important for the reasons given.

A modification of this form of jigging-frame is shown in Fig. 5, in which the frame instead of being hinged at the lower side is supported by a duplication of parts 0, J, J, N, I, and 0, (represented in said Fig. by c, j,

' j, n, 2', and 0.) In this modification by the I 5 use of the adjusting-screw 0 the reciprocating motion of the lower side of the table may be so reduced as to be practically mil, as preferred in practice, or it may be increased until equal to the reciprocating motion atthe upper side of the table. It is manifest that this combination of multiple jigging-frames, independently adjustable as to speed and extent of reciprocating motion and degree of lateral incline all under one endless carrierbelt, may be applied to various old forms of jigging-frames in which these various properties are not adjustable. It is also manifest that the reciprocating motion may be varied anywhere from a vertical to a horizontal motion without departing from the principle employed.

It is not desired to be limited to the particular construction, as the same result may be obtained by various modifications of the particular means found most desirable, and shown in the drawings, foradjusting and regulating the amount of reciprocating motion, the degree of incline of the jigging-table, and the adjustability of the multiple jiggingframes independently of each other, as well as other details of construction.

Having thus fully described the invention, what is claimed as new, and desired to be secu red by Letters Patent, is

1. In a concentrating-table, the combination with an endless belt of a jigging-frame thereunder, and means for imparting a reciprocating motion to the frame at or near one of the sides of the belt, substantially as set forth.

2. In a concentrating-table, the combination with an endless belt of a jigging-frame thereunder, means for imparting a reciprocating motion to one side of the frame, and mechanism as described for regulating the extent of said reciprocating motion, substantially as set forth.

3. In a concentrating-table, the combination with an endless belt of a jigging-frame thereunder, means for imparting a reciprocating motion to one side of the frame, and mechanism as described for inclining said frame laterally, substantially as set forth.

4. In a concentrating-table, the combination with an endless belt of a jigging-frame thereunder, means for imparting a reciproeating motion to one side of the frame, and mechanism as described for adjustably inclining said jigging-frame laterally, substantially as set forth.

5. In a concentrating-table, the combination with an endless belt of a jigging-frame thereunder stationary as to one side, and means for lifting and suddenly dropping the frame at one side of the belt, substantially as set forth.

6. In a concentrating-table, the combination with an endless belt of a jigging-frame thereunder, means for imparting a vertical reciprocating motion to one side of said frame, and mechanism as described for regulating the extent of said reciprocating motion independent of the adjustment of the main frame, substantially as set forth.

7. In a concentrating-table, the combination with an endless belt of a jigging-frame thereunder, means for imparting a vertical reciprocating motion to one side of the frame, and mechanism as described for regulating the inclination of said frame laterally independent of the adjustment of the main frame, substantially as set forth.

8. In a concentrating-table, the combination with an endless belt of a jigging-frame thereunder, secured at one side and means forimparting a reciprocating motion to the other side of said frame, substantially as set forth.

9. In a concentrating-table, the combination with an endless belt of multiple jiggingframes thereunderin longitudinal series, and

means forimparting a reciprocating motion to said jigging-fram es, substantially as set forth.

10. In a concentrating-table, the combination with an endless belt of multiple jiggingframes thereunder, and means for imparting a reciprocating motion to the frames at or near one of the sides of the belt, substantially as described.

11. In a concentrating-table, the combination with an endless'belt of multiple jiggingframes thereunder, means for imparting a reciprocating motion to said jigging-frames, and m echanism as described for regulating the extent of said reciprocating motion, substantially as set forth.

12. In a concentrating-table, the combination with an endless belt of multiple jiggingframes thereunder, means for imparting a reciprocating motion to said frames, and mechanism as described for regulating the inclination of said frames laterally independent of the adjustment of the main frame, substantially as set forth.

13. In a concentrating-table, the combination with an endless belt of multiple jiggingframes thereunder, and means forimparting a reciprocating motion independent as to degree to the respective frames, substantially as set forth.

14. In a concentrating-table, the combination with an endless belt of multiple jiggingframes thereunder, means for imparting an independent reciprocating motion to the respective frames, and mechanism as described for regulating the rapidity of the reciprocating motion of the respective frames, substantially as set forth.

15. In aconcentrating-table, the combination With an endless belt of multiple jiggingframes thereunder, means for imparting an independent reciprocating motion to the respective frames, and mechanism as described for regulating the extent of the reciprocating motion of the respective frames, substantially as set forth.

' 16. In a concentrating-table, the combination with an endless belt of multiple jiggingframes-thereunder, means for imparting an independent reciprocating motion to the respective frames, and mechanism as described for regulating the inclination of the respective frames, substantially as set forth.

17. In a concentrating-table, the combination with an endless belt of multiple jiggingframes thereunder, and means for imparting an independent reciprocating motion variable with relation to each other to one side of the respective frames, substantially as set forth.

18. In a concentrating-table, the combination with an endless belt of multiple jiggingframes thereunder, means for imparting a reciprocating motion to one side of said frames,

and mechanism as described for regulating the rapidity of said reciprocating motion independently with relation to the other frames, substantially as set forth.

19. In a concentrating-table, the combina tion with an endless belt of multiple jiggingframes thereunder, means for imparting a reciprocating motion to one side of said frames, and mechanism as described for regulating the extent of said reciprocating motion, substantially as set forth.

20. In a concentrating-table, the combina tion with an endless belt of multiple jiggingframes thereunder, means for imparting a reciprocating motion to one side of said frames, and mechanism as described for regulating the inclination of said frames laterally, sub stantially as set forth.

21. In a concentrating-table, the combination with an endless belt of multiple jiggingframes thereunder having an independent reciprocating motion, and adj usting-screws for regulating the extent of the reciprocating motion of the respective frames independently of each other, substantially as described.

22. An ore-concentrating table comprising an endless belt, multiple jigging-frames thereunder having a reciprocating motion and independently adjustable as to lateral and longitudinal incline and degree and speed of reciprocation, and an ore and water supply, substantiall as described.

23. In a concentrating-table, the combination with an endless belt of multiple jiggingframes thereunder having an independent reciprocating motion, and the screws 0 in the castings N for regulating the extent of reciprocating motion ofthe respective jiggingframes independently of each other, substantially as described.

2a. In a concentratingtable, an endless belt, and multiple jigging-frames thereunder each having an inclination and reciprocating motion respectively independent of the others, substantially as set forth;

25. In aconcentrating-table,ajigging frame or frames thereunder, cams J for imparting to either side ofsaid frame and to each of said frames reciprocating motions variable with relation to each other, the screws 0 and I in the castings N operating to regulate independently the speed of reciprocation, extent of throw and incline of the several por tions of said table, substantiallyas set forth.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses,

MARTHA P. WILLITS, Executrim of the last will and testament of Van Burton Willits, deceased. Witnesses:

WM. H. PRAY, S. C. TRUEBLOOD. 

